package com.tao.config;

import com.tao.filter.JwtAuthenticationTokenFilter;
import com.tao.handler.AccessDeniedHandlerImpl;
import com.tao.handler.AuthenticationEntryPointImpl;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.security.authentication.AuthenticationManager;
import org.springframework.security.config.annotation.method.configuration.EnableGlobalMethodSecurity;
import org.springframework.security.config.annotation.web.builders.HttpSecurity;
import org.springframework.security.config.annotation.web.configuration.WebSecurityConfigurerAdapter;
import org.springframework.security.config.http.SessionCreationPolicy;
import org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder;
import org.springframework.security.crypto.password.PasswordEncoder;
import org.springframework.security.web.authentication.UsernamePasswordAuthenticationFilter;

@Configuration
//开启权限功能 不启用不生效
@EnableGlobalMethodSecurity(prePostEnabled = true)
public class SecurityConfig extends WebSecurityConfigurerAdapter {

    @Autowired
    private JwtAuthenticationTokenFilter jwtAuthenticationTokenFilter;

    @Autowired
    private AuthenticationEntryPointImpl authenticationEntryPoint;

    @Autowired
    private AccessDeniedHandlerImpl accessDeniedHandler;



    @Bean
    @Override
    public AuthenticationManager authenticationManagerBean() throws Exception {
        return super.authenticationManagerBean();
    }

    @Bean
    public PasswordEncoder passwordEncoder() {
        return new BCryptPasswordEncoder();
    }

    @Override
    protected void configure(HttpSecurity http) throws Exception {
       http
               //关闭csrf
               .csrf().disable()
               //不通过Session获取SecurityContext
               .sessionManagement().sessionCreationPolicy(SessionCreationPolicy.STATELESS)
               .and()
               .authorizeRequests()
               // 对于登录接口 允许匿名访问
               .antMatchers("/login/user","/login/register","/login/admin","/client/**").anonymous()
               // 除上面外的所有请求全部需要鉴权认证(验证token和权限）
               .anyRequest().authenticated();

        //把token校验过滤器添加到过滤器链中
        http.addFilterBefore(jwtAuthenticationTokenFilter, UsernamePasswordAuthenticationFilter.class);

        // 配置异常处理类
        http.exceptionHandling().authenticationEntryPoint(authenticationEntryPoint);
        http.exceptionHandling().accessDeniedHandler(accessDeniedHandler);

        //是否允许跨域
        http.cors();
    }
}
